Trustees



E K S ...l hr. R E,

BOX BLANK GUTTER.

N0.,360,674. 1 Patented Apr. 5, 1887'.

UNITED k STATES PATENT OFFICE.

HENRY FISKE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO CHARLES F. COPELAND, OF SAME PLAQE, AND GRANVILLE WV. DANIELS, OF SOMER- YILL i, MASSACHUSETTS," TRUSTEES.

BOX-BLANK CUTTER.n

SPECIFICATION forming part of Letters .Patent No.l 360,674,13ated April 5, 1887. l

Application filed March 1l, 18%.

To @ZZ whom, it 11mg/ concern: y v

Be it known that I, HENRY l. Fiskii, of Boston, in the county of Suffolk and State of hIassachusetts, have invented certain new and useful linprovcinenls in lloxlllank Cutters, of which the following is a specification.v

illy invention relates to box-blank cutters, and has as its ohject to provideimprovements in machines of that character, as will be here ro inafter lfull y described, and subsequently set forth in the claim. i

Of the accompanying drawings, hereto airnexed and forming part of this specification, Figure l. represents a perspective view of an i5 inverted platen and its carrier provided with blades and creasers embodying my invention, parts heing pictured as broken away. Fig. 2 represents a section on the line iv ir of Fig. 1, showing also a sectional view ot' the bed and zoits carrier opposite to and cooperating with the cutters and creasers.4

Similar letters of reference indicate similar part-s in both figures.-

a represents the inoval ile carrier of the platen 25 c,provided With dovetail lianges b at the edges ot' its under side, forming a substantial dovetail groove,perinitting the eutterplaten c, provided with aproiection corresponding to said groove, to be secured thereto by sliding said 3o projection into said groove, .as shown. The cutter-platen c is extended at its sides, so as to project ont even with the sidi-s of the bed a, as shown at d.

`e represents sectional strips, to which the 3 5 cutting-knivesf and creasers g are secured by means of screivs h or otherwise, and said strips i are secured to platen e byineans of screws i, guide or steady pins j, attached to said strips and adapted to enter holes formed in the platen, 4c being employed to insure the getting of the knives Ainto precisely the saine position at each time of replacing after removing them for the purpose of sharpening or repairing them, or for any other cause. l i5 it is important that the knives should always have exactly the sainepo'sition on their.

platen, since a change of their position thereon to any appreciablev extent would render the cotnierative inl ting piti-ts oi' the lied il ineffective Serial No. 191,797. (No model.)

in severing the paper or paperboard designed to forni the box-blank, and it has been found quite impossible to secure this preciseness of position of the euttingbladcs by the securing screws alone. n

The cutting-edges of the bla-des or .knives f are formed at an angle with respect to the face ofthe opposite cooperatin g bed j', for a purpose to be present-ly explained. The faces of the creasers are parallelwith the face of the bed j, and are on a plane substantially even with the lowest point of the cutting-knives f.A

A hed, j,is formed as disclosed in my pend ing application, filed December 2, 1SS5, No. 184,503, and is secured to its carrier 7.: in the saine manner that cutter-platen c Iattached to carrier a.

By the construction and arrangement of parts as shown and described, upon the iiist operation of the machine the knives f will ent through the copper orhard face of the bed and into the softer portion tliereof,forniing the cutting-grooves Z, the cieaser sinking into the bed and forming the creasfr-grooves in. In t-lie subsequent operations of the machine the straight orperpendicnlar part of the knives will move in close contact with the corresponding part ot' the grooves l, and the deepest or widest part of said knives being the first to come in Contact with the side of said grooves, it follows that they will operate with a shearing eut in connection therewith, so that paper or paperboard to form the box-blank placed between the knives and the`bed-will lbe cleanly andsmoothly cut, as with apair of shears, which would not be the case if the cuttingedges of the knives were formed parallel with the face of the bed and said knives were to operate on the paper or paper-hoard at the same instant throughout their entirezlengths.

It is not only essential that the knives or cut tei'sshould be replaced en their strips after I removal for any cause in precisely lthe saine position. they previously occupied ,and thatthe strips should he giventhe 'saine position on .the platen c, but that the latter should he locked in precisely the saine position on its carrier c upon ieiiiacemcnt each time' after removal, and that the saine thing should he done with respect to the'bed y and its carrier, and to secure these ends the platen c and its carrier a, as well as the bed j and its carrier, are not only provided with tongue-and-groove Y 5 connections, as shown, but a key, b', is driven in between the, dovetail flange b and tlie'sides I of the carriers, t0 insure their retention' in position, it being understood of course that the platens c and beds j are used in pairs-that ro is, a platen7 c, and its particular arrangement they previously occupiede-vcry important matters in contrivanees of this kind.

What I claim is- The platen, a series of backing-strips detachably secured thereto and provided with 25 guide orsteady pins forguiding them to proper position, and a series of sectional blades and a series of sectional ereasers secured to Said vbacking-strips, all arranged, related.` and combined substantially as and for the purposes 3o hereinbefor'e set'forth.

In testimony whereof I have signed my naine t0 this Speciiication,in the presence oftwo subscribing Witnesses, this 12th day of February, 1886.

y Hanni' P. FISKE.

XVitiiesses: i

` ARTHUR W. Caossmcv,

C. F. BROWN. 

